Oracles

Hashi integrates multiple oracles to relay block headers and messages securely across different blockchains. Each oracle operates with its own set of contracts and mechanisms depending on the source and destination chains. Below are the deployment details for each oracle, including testnets when available.

GMP Oracles

A GMP Oracle (General Message Passing Oracle) facilitates message transmission across different blockchain networks by acting as a trusted entity to validate, relay, and process cross-chain messages, ensuring that data or instructions are accurately transferred between chains.

LayerZero

LayerZero is a cross-chain communication protocol. It allows developers to configure security through Decentralized Verifier Networks (DVNs), offering modular control over message validation. LayerZero currently supports 49+ chains.

Reporter

Chain	Reporter Address	Supported destination chains
Ethereum	0x8B5588E6fe0E34EF6cEAc15cE10812e1b86bA104	Polygon, BNB, Optimism, Gnosis Chain
Gnosis Chain	0xA3Bc83D557E3f2dDfF4D44966A96397760159D8B	Polygon, BNB, Arbitrum, Optimism, Base
Polygon	0x231e48AAEaAC6398978a1dBA4Cd38fcA208Ec391	Gnosis Chain, BNB, Arbitrum, Optimism, Base
BNB	0xc9618e4d4B59570Da67b4fb0E8fC7EB40A5f8462	Gnosis Chain, Polygon, Arbitrum, Optimism, Base
Arbitrum	0xf4C84D9ced01534f235078A10E8A44A726c4b73c	Gnosis Chain, Polygon, BNB, Optimism, Base
Optimism	0xB866C6dD03434d8fA792C471b454cb4E72ca35dc	Gnosis Chain, Polygon, BNB, Arbitrum, Base
Base	0x628329c814163E8319f8E47D0e99597A8982a300	Gnosis Chain, Polygon, BNB, Arbitrum, Optimism

Adapter

Chain	Adapter Address	Supported Source Chains
Gnosis Chain	0x6602dc9b6bd964C2a11BBdA9B2275308D1Bbc14f	Ethereum, Polygon, BNB, Arbitrum, Optimism, Base
Polygon	0xf4C84D9ced01534f235078A10E8A44A726c4b73c	Ethereum, BNB, Arbitrum, Optimism, Base
BNB	0x97761F61736Ec2D108a1b6826f5Ee2E02d1B333e	Ethereum, Gnosis Chain, Polygon, Arbitrum, Optimism, Base
Arbitrum	0x97761F61736Ec2D108a1b6826f5Ee2E02d1B333e	Gnosis Chain, Polygon, BNB, Optimism, Base
Optimism	0x746dfa0251A31e587E97bBe0c58ED67A343280Df	Ethereum, Gnosis Chain, Polygon, BNB, Arbitrum, Base
Base	0x5F98c418C10132aA4D1b3c98cE4F68Ef2435e4eC	Gnosis Chain, Polygon, BNB, Arbitrum, Optimism

AMB (Arbitrary Message Bridge)

Gnosis Chain's Arbitrary Message Bridge (AMB) is the chain's legacy canonical bridge. It enables cross-chain communication between Gnosis Chain and Ethereum (and other EVM networks). It allows contracts to send data and trigger actions on another chain through a set of decentralized validators.

Source Chain	Destination Chain	Reporter	Adapter
Ethereum	Gnosis Chain	0xDbdF80c87f414fac8342e04D870764197bD3bAC7	0x79e4D1B8b8De0bC2F8A3DC477480C935C66F373E
Sepolia (Testnet)	Chiado (Testnet)	0xc6755144d60548f3DD420F47Cf48DAe553bBf042	0x3F5929bee6A59661D6CcC9c4eB751048009CE11B
Chiado (Testnet)	Sepolia (Testnet)	0xc6755144d60548f3DD420F47Cf48DAe553bBf042	0x3F5929bee6A59661D6CcC9c4eB751048009CE11B

Wormhole

Wormhole is a cross-chain interoperability protocol that connects over 30 blockchains. It uses a decentralized network of 19 Guardians to validate cross-chain messages through a mechanism called Verifiable Action Approvals (VAAs).

Source Chain	Destination Chain	Reporter	Adapter
Sepolia (Testnet)	Chiado (Testnet)	0xeE8082F48e768e096c2EEC5C80DC818eb6E15858	0x79e4D1B8b8De0bC2F8A3DC477480C935C66F373E

CCIP (Chainlink Cross-Chain Interoperability Protocol)

Chainlink’s Cross-Chain Interoperability Protocol (CCIP) facilitates secure token transfers and cross-chain messaging across nine blockchains. It integrates decentralized oracle networks and a Risk Management Network to ensure security for cross-chain applications.

Source Chain	Destination Chain	Reporter	Adapter
Sepolia (Testnet)	Chiado (Testnet)	0xf66871C91952b09270d223cD3A1e5Dad57b14fbC	0x8A2A7509B98f0f21BEFF82e2520A920DB61fFa9d

ZK Light Clients

A ZK Light Client is a lightweight blockchain client that uses zero-knowledge proofs (ZKPs) to securely verify and relay blockchain state data between networks.

Light client-based oracles don't need for a reporter contract on the source chain to dispatch messages or block headers. Instead, they only require an adapter on the destination chain. Off-chain systems generate cryptographic proofs, which are submitted to the adapter contract for on-chain verification. Once validated, the resulting hash is securely stored on the destination chain.

DendrETH

DendrETH is a ZK light-client-based oracle focusing on updating and verifying block headers without needing a reporter on the source chain. It ensures enhanced security by allowing proofs to be generated off-chain and verified on-chain.

Source Chain	Destination Chain	Adapter	Light Client
Chiado (Testnet)	Sepolia (Testnet)	0xAd57D37179577DE2C05Ee2F210da1C6Fb2d1843b	0x4F8454bcb4A81D821072EfaCBECF59450956D5EC
Sepolia (Testnet)	Chiado (Testnet)	0x3CDeE1faEE13b13764C9FA3b2F0AE5aD7c3Cc2B5	0xbaceea8c47aa075cf944315c4ee2a029066415f8
Sepolia (Testnet)	Lukso Testnet	0x17c4e6c1EF568d113d7D7CA78DefCbddBcEE05dC	0x151E75b27799c24506DB735E59AB8C59cd10d9De

Spectre

Spectre is a ZK light-client oracle solution designed to handle secure message dispatching across chains. Spectre listens to dispatched messages from supported chains and verifies them on the destination chain using cryptographic proofs.

Source Chain	Destination Chain	Adapter*
Sepolia (Testnet)	Chiado (Testnet)	0x731e64a076027b4024ce5a4F68bA9FF0093D3c86
Chiado (Testnet)	Sepolia (Testnet)	0x0b51633aE43BF1BaC0cf6149beC37096241C0Cf4

*The Spectre Adapter listens MessageDispatched event from Sepolia's Yaho and the MessageDispatched event from Chiado's Yaho respectively.